This 3D visualization provides the tectonic context for volcanic activity in Costa Rica. Active volcanoes are confined to northern Costa Rica because the subducted Cocos plate is relatively deep there. In contrast, almost no volcanic activity happens in the south because of processes directly or indirectly related to the subduction of the Cocos Ridge. Funding for this visualization was provided by the NASA Earth Observing System Higher Education Alliance. For more information, see http://gsdidocs.org/gsdiconf/GSDI-9/papers/TS57.3paper.pdf